Floating marine structure

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i, mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ, and
• the corrugations have generatrices with an inclination δ,
• 40°≦γ≦80° and 30°≦δ≦60°, and
• the mean angular aperture γ of each of the strips (4A) of the length (3A) and the inclination δ of the generatrices of the corrogations, when viewed face on, are connected by the relationship 1 - 2 ⁢ sin ⁢ ⁢ 2 ⁢ δ ⁢ ⁢ cos 2 ⁡ ( γ / 2 ) * B - sin 2 ⁡ ( γ / 2 ) 2 ⁢ B ⁢ B - A 2 < 0.6 ,
• with A=1−cos2δ.cos2(γ/2) and B=A(1+sin2(γ/2))−sin2(γ/2).

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i, mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ of substantially 40°, and
• the corrugations have generatrices with an inclination δ substantially between 30° and 60°.

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i, mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ of substantially 50°, and
• the corrugations have generatrices with an inclination δ substantially between 40° and 60°.

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i, mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ of substantially 60°, and
• the corrugations have generatrices with an inclination δ substantially between 40° and 60°.

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ of substantially 70°, and
• the corrugations have generatrices with an inclination δ substantially between 50° and 60°.

A floating offshore structure, comprising:

• a floating platform with an angle of oscillation i at most equal to a predetermined value io substantially between 5° and 10°;
• and
• a double air distillation column (1) carried by the floating platform,
• the distillation column comprising, over at least part of its length, a cross-corrugated packing (3),
• the cross-corrugated packing comprising a superposition of lengths of packing (3A, 3B),
• each of the lengths of packing comprising a stack of vertical corrugated strips (4A, 4B) with corrugations (5) alternately inclined in opposite directions,
• the corrugations of the strips (4A) of at least one length of packing (3A) being configured such that, for each pair of adjacent strips (4A), when the strips are inclined in their general plane by the angle i, mean lines of greatest slope (15, 17) of mean corrugation flanks (10) of two adjacent strips delimit, measuring from any point (A) on an upper edge (12) of the adjacent strips, on each side of a perpendicular (14) to the upper edge at the point (A), a flattened cone (16) with an axis (18) formed with the perpendicular (14) an angle d such that a ratio d/i is less than 0.6,
• wherein,
• each of the strips (4A) of the length (3A) have corrugations with a mean angular aperture γ of substantially 80°, and
• the corrugations have generatrices with an inclination δ of substantially 60°.